The mosquitoes and ticks can transmit infectious diseases, the Ministry of Health warns, quoted by Info-Prim Neo. Epidemiologists recommend the population to take the necessary protection measures when in the open air and at home. The studies carried out by the National Public Health Center revealed three types of species of mosquitoes that can transmit the West Nile virus. Preliminary studies showed the given virus is also present in some types of ticks. The virus affects the nervous system, while the symptoms vary depending on the brain area attacked. Another virus transmitted by mosquito bites is Dengue. The disease manifests as fever of sudden onset associated with headache, muscle and joint pains, but the complications can lead to dengue hemorrhagic fever that can be fatal. Ticks are blood-feeding parasites that are often found in tall grass where they will wait to attach to a passing host – wild and domestic animals and sometimes humans. Physical contact is not the only method of transportation for ticks. Ticks can't jump or fly. Changes in temperature and day length are some of the factors signalling a tick to seek a host. Ticks can detect heat emitted or carbon dioxide respired from a nearby host. They will generally drop off the host when full, but this may take several days. Ticks are more active outdoors in warm weather, but can attack a host at any time. They are especially abundant near water and in meadows wherever shrubs and brush provide woody surfaces and cover. Ticks are a vector for a number of diseases including Lyme disease, Rocky Mountain spotted fever and other tick-borne disease.